Hello Sable,Thick cakes pose a threat to the structure of the pipe because they expand with heat and can crack the bowl.
I've seen quite a few over the years. But then again, I've handled a lot ofHello Sable,
I've never heard or seen that a cake can break a bowl. I think before this happens the cake would break, what in fact happened sometimes in those (early) days when I let grow the cake. (building cake was a kind of competition among us young boys). The reason why I began to reduce the cake was the loss of the tobacco capacity of the chamber and the realization that from a certain thickness of the cake there was no further improvement of the taste.
Okay, I believe you. I think you meant, when the pure hard layer you described, grows thicker and thicker it can cause a bowl crack by expanding under heat.I've seen quite a few over the years. But then again, I've handled a lot of
used, secondhand, old, beaten to death, estate pipes.